C11112331312111112111133133313331333132322121111331312113313331323223121   >>    C1111233131211111211113313331333133313232212111133131211331333132322312   <<    C11112331312111112111133133313331333132322121111331312113313331323223123   >>      C11112331312111112111133133313331333132322121111331312113313331323223122   >>